Platjooraph co



H. F. PARKE. STEAM LOCOMOTIVE SPARK ARRESTER.

APPLICATION FILED 0CT .12, 191B.

Patented Oct. 7, 1919.

2 SHEETS-SHEET 1- I NV ENTOR 'H. F. PARKE STEAM LOCOMOIIVE SPARK ARRESTER.

APPLICATION FILED on. I2. 1913.

15318009. Patentkd Oct. 7,1919.

" 2 SHEETS-SHEET 2.

o I l 0 E6 W4 5 a l F1 2 1 2 I l I i 3 H1 I i g a I I, i l l I E 1 IIVI/ENTOR WWWYZ 7 0 [I 2 BY ATTORNEY THB COLUMBIA PLANOGRAPH 60.. WASHINGTON, D. c.

v r ATES HowAnn IE. PARKE, OF KANSAS oI'rY, ivrrssoimr.

STEAM-Locomotive srAnK-Annnsrna.

Specification of Letters Patent.

Patented Oct. '7, 1919.

Application filed. October 12, 1918. Serial No. 257,915.

To all whom it may concern:

Be it known that I, HOWARD F. PARKE, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented Steam- Locomotive .S'parkArresters, of which the following is a specification.

The present invention relates to spark arresting devices and aims to provide an improved device of this character especially adapted for efficient operation in connection with the smoke stacks of locomotives.

To this end I have devised a structure comprising a rotary member having sparkarresting blades arranged for operation in freely exposed relation above the top of the smoke stack.

A further feature of the improved device is the peculiar mounting of the same for rotation about a horizontal axis located off center with relation to the vertical central line of the smoke stack.

It is also sought to provide an extremely simple and inexpensive device of the character described, adapted to be readily and cheaply installed in connection with any ordinary type of stack.

WVith these objects in view the invention will now be described with reference to the accompanying drawing illustrating one form of construction for embodying the improvements, in which drawing--- Figure 1 is a front elevation showing a portion of a smoke stack having mounted thereon a spark arresting device constructed in accordance with the present invention;

Fig. 2 is a plan view of the same; and

Fig. 3 is a vertical section taken on the line 33 of Fig. 2.

The said drawing shows the improved device as comprising a rotary member, desig nated generally by the reference numeral 1, provided with a plurality of radial fan elements or blades 2 carried by a horizontal axle 3 which is formed with journals 5 rotatably mounted in journal boxes A. These journal boxes are located at the upper ends of a pair of forked standards, the legs 6 of which extend downward to the opposite sides of the smoke stack 10, while the legs 7 of said standards project rearward into adjoining relation at the rear of the said stack, the lower ends of said legs 6 and 7 being suitably secured to a supporting ring 8 fastened by means of bolts 9 to the interior of the top margin of said stack 10. In this way the rotary member 1 is supported in a position for presenting its spark arresting elements 2 in freely exposed relation to the exhaust from the locomotive as well as to the air currents above the stack 10, and preferably said rotary member is carried with its horizontal axis located to one side of the central vertical line of the stack, as clearly shown in Figs. 2 and 3, in order to present said spark arresting elements or blades 2 in more effective relation to the exhaust, as when the locomotive is stationary, and the exhaust is following a more direct upward course. As shown in Figs. 1 and 3, the legs 6 of the standards are substantially upright, while the legs 7 are curved more or less to the rear for the purpose of bracing the device against the air currents established by the movement of the locomotive.

It will thus be apparent that I have devised a practical and eliicient spark arresting construction in which the rotary movement of thedevice 1 is effected by the combined action of the exhaust and of the air currents resulting from the movement of the locomotive. Such rotation of the device causes the sparks omitted from the stack to be broken up into much finer particles which are either trapped by the blades 2 or deflected by the movement thereof, with the result that the sparks are either effectually deadened or entirely extinguished, as will be readily understood.

Having described the invention, what I claim is:

1. A spark arrester comprising, in combination with a smoke stack, a rotary device provided with a plurality of radially projecting blades, and supporting means arranged to carry said device with its blades entirely exposed in all directions above the top of the smoke stack and permitting free rotary movement of the device about a horizontal axis.

2. A spark arrester comprising, in comvice, thereby forming spark-trapping pockbina-tion With a smoke stack, a device proets between each pair of adjoining blades, vided With a pluralityof radially projecting and means for supporting said device in blades" rotating about a horizontal axis, said freely exposed relation above the top of the 10 5 blades being formed as continuous elements smoke stack.

from their outer edges to the axis of said de- I HOWARD F. PARKE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I); 0. 

